<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
     <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
     <el-breadcrumb-item>用户管理</el-breadcrumb-item>
     <el-breadcrumb-item>用户列表</el-breadcrumb-item>
</el-breadcrumb>

<!-- 卡片视图区域 -->
<el-card>
  <!-- 搜索与添加区域 -->
  <el-row :gutter="20">
    <el-col :span="8">
      <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
      </el-input>
    </el-col>
    <el-col :span="4">
      <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
    </el-col>
  </el-row>

    <!-- 用户列表区域 -->
    <el-table :data="userlist" border stripe>
      <el-table-column type="index"></el-table-column>
      <el-table-column label="姓名" prop="username"></el-table-column>
      <el-table-column label="邮箱" prop="email"></el-table-column>
      <el-table-column label="电话" prop="mobile"></el-table-column>
      <el-table-column label="角色" prop="role_name"></el-table-column>
      <el-table-column label="状态" prop="mg_state">
        <template slot-scope="scope">
          <!-- {{scope.row}} -->
          <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="180px">
        <!-- eslint-disable-next-line -->
        <template slot-scope="scope">
          <!-- 修改按钮 -->
          <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
          <!-- 删除按钮 -->
          <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
          <!-- 分配角色按钮 -->
          <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
             <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
          </el-tooltip>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页区域 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1,2,3,4,5]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
</el-card>
<!-- 添加用户的对话框 -->
<el-dialog
  title="添加用户"
  :visible.sync="addDialogVisible"
  width="50%"
  @close="addDialogClosed">
  <!-- 内容主体区域 -->
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
  <el-form-item label="用户名" prop="username">
    <el-input v-model="addForm.username"></el-input>
  </el-form-item>
  <el-form-item label="密码" prop="password">
    <el-input v-model="addForm.password"></el-input>
  </el-form-item>  
  <el-form-item label="邮箱" prop="email">
    <el-input v-model="addForm.email"></el-input>
  </el-form-item>  
  <el-form-item label="手机" prop="mobile">
    <el-input v-model="addForm.mobile"></el-input>  
  </el-form-item>
  </el-form>
  <!-- 底部区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
</el-dialog>
<!-- 修改用户的对话框 -->
<el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
  <el-form-item label="用户名">
    <el-input v-model="editForm.username" disabled></el-input>
  </el-form-item>
  <el-form-item label="邮箱" prop="email">
    <el-input v-model="editForm.email"></el-input>
  </el-form-item>
  <el-form-item label="手机" prop="mobile">
    <el-input v-model="editForm.mobile"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editorUserInfo">确 定</el-button>
  </span>
</el-dialog>
<!-- 分配角色的对话框 -->
<el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
  <p>当前的用户:{{userInfo.username}}</p>
  <p>当前的角色:{{userInfo.role_name}}</p>
  <p>分配新角色:
    <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
    </el-option>
  </el-select>
  </p>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if(regEmail.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }
      
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if(regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的参数
      queryInfo:{
        query:'',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      userlist:[],
      total:0,
      userinfo:{},
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible:false,
      // 添加用户的表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      // 添加表单的验证规则对象
      addFormRules:{
        username:[
          {required: true, message:'请输入用户名',trigger:'blur'},
          {min:3,max:10,message:'用户名长度在3到10个字符之间',trigger:'blur'}
        ],
        password:[
          {required: true, message:'请输入密码',trigger:'blur'},
          {min:6,max:15,message:'用户名长度在6到15个字符之间',trigger:'blur'}
        ],
        email:[
          {required: true, message:'请输入邮箱',trigger:'blur'},
          {validator: checkEmail, trigger:'blur'}
        ],
        mobile:[
          {required: true, message:'请输入手机',trigger:'blur'},
          {validator: checkMobile, trigger:'blur'}
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible:false,
      // 查询到的用户信息对象
      editForm:{},
      // 修改表单的验证规则对象
      editFormRules:{
        email:[
          {required: true, message:'请输入邮箱',trigger:'blur'},
          {validator: checkEmail, trigger:'blur'}
        ],
         mobile:[
          {required: true, message:'请输入手机',trigger:'blur'},
          {validator: checkMobile, trigger:'blur'}
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible:false,
      // 需要被分配角色的用户信息
      userInfo:{},
      // 所有角色的数据列表
      rolesList:[],
      // 已选中的角色ID值
      selectedRoleId:''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
  async getUserList(){
      const {data:res} = await this.$http.get('users',{params:this.queryInfo})
      if(res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total =res.data.total
      // console.log(res);
    },
    // 监听 pagesize 改变的事件
  handleSizeChange(newSize){
    this.queryInfo.pagesize = newSize
    this.getUserList()
  },
  // 监听页面值改变的事件
  handleCurrentChange(newPage){
    this.queryInfo.pagenum = newPage
    this.getUserList()
  },
  // 监听 switch 开关的状态的改变
  async  userStateChanged(userinfo){
    const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
    if(res.meta.status !== 200) {
      return this.$message.error('更新用户状态失败')
    }
    this.$message.success('更新用户状态成功')
  },
  // 监听添加用户对话框的关闭事件
  addDialogClosed(){
    this.$refs.addFormRef.resetFields()
  },
  // 点击按钮，添加新用户
  addUser(){
    this.$refs.addFormRef.validate(async valid => {
      // console.log(valid);
      if(!valid) return
      // 可以发起添加用户的网络请求
      const {data:res} = await this.$http.post('users',this.addForm)

      if(res.meta.status !== 201) {
        return this.$message.error('添加用户失败')
      }
      this.$message.success('添加用户成功')
      // 隐藏添加用户的对话框
      this.addDialogVisible = false
      // 重新获取用户列表
      this.getUserList()
    })
  },
  // 展示编辑用户的对话框
  async showEditDialog(id){
    const {data:res} = await this.$http.get('users/' + id)

    if(res.meta.status !== 200) {
      return this.$message.error('查询用户信息失败')
    }

    this.editForm = res.data
    this.editDialogVisible = true

  },
  // 监听修改用户对话框的关闭事件
  editDialogClosed(){
    this.$refs.editFormRef.resetFields()
  },
  // 修改用户信息并提交
  editorUserInfo(){
    this.$refs.editFormRef.validate(async valid => {
      // console.log(valid);
      if(!valid) return
      // 可以发起修改用户的网络请求
      const {data:res} = await this.$http.put('users/' + this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})

      if(res.meta.status !== 200) {
        return this.$message.error('修改用户失败')
      }
      // 隐藏修改用户的对话框
      this.editDialogVisible = false
      // 重新获取用户列表
      this.getUserList()
      // 提示修改成功
      this.$message.success('修改用户成功')
    })
  },
  // 根据id删除对应的用户信息
  async removeUserById(id){
    // 弹窗询问用户是否删除
    const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // console.log(confirmResult);
      // 如果用户确认删除,返回 confirm
      // 如果用户取消删除,返回 cancel
      if(confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }

      const {data:res} = await this.$http.delete('users/' + id)
      if(res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }

      this.$message.success('删除用户成功')
      this.getUserList()
  },
  // 展示分配角色的对话框
  async setRole(userInfo){
    this.userInfo = userInfo

    // 在展示对话框之前，获取所有角色列表
    const {data:res} = await this.$http.get('roles')
    if(res.meta.status !== 200) {
      return this.$message.error('获取角色列表失败')
    }
    
    // this.$message.success('获取角色列表成功')
    this.rolesList = res.data
    
    this.setRoleDialogVisible = true
  },
  // 点击按钮。分配角色
  async saveRoleInfo(){
    if(!this.selectedRoleId) {
      return this.$message.error('请选择要分配的角色')
    }

    const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})
    if(res.meta.status !== 200) {
      return this.$message.error('更新角色失败')
    }

    this.$message.success('更新角色成功')
    this.getUserList()
    this.setRoleDialogVisible = false
  },
  // 监听分配角色对话框的关闭事件
  setRoleDialogClosed(){
    this.selectedRoleId = ''
    this.userInfo = {}
  }
}  
}
</script>

<style lang="less" scoped>

</style>